Automatic shake-feeder.



Patented Aug. 22, |899. J. B. lIRNWALL AUTOMATIC SHAKE FEEDER.

(Application led a 1 eeeeeeeeeeee i m 11 "n Patente'd Aug. 22,1899.

J. B. CORNWALL.

AUTOMATIC SHAKE FEEDER.

on led May 27, 1898 ala@ J ad

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' UNITED STATES PATENT Fries.

JOI-IN B. CORNWALL, OF MOLINE, ILLINOIS, ASSIGNOR TO THE BARNARD d;

LEASv MANUFAOTURIN G COMPANY,

OF SAllIE PLA CE.

AUTOMATIC SHA'KE-FEEDER.

SPECIFICATION forming part of Letters Patent No. 631,485, dated August 22, 1899.

Application filed May 27. 1898. Serial No. 681,893.

To all whom t may concern:

Be it known that I, JOHN B; CORNWALL, of Moline, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Automatic Shake-Feeders and I hereby declare that the following is a full, clear, and exact description thereof, .reference being had to the accompanying drawings, which form part of this 1o specification.

This invention Ais an improved feeder for roller-mills, uc., and is more particularlyan improvement upon the feeder shown in Iletters Patent granted to me January 8, 1895,

No. 532,141; and the object of the present invention is to combine with the automatic shaking or vibrating feed a force-feed, the feeders being arranged to pass material between them, whereby clogging ofthe material 2o being fed is effectively prevented. To this end I provide the hinged gate or valve, which is preferably weighted so as to automatically regulate the size of the feed-opening by the weight of the material in the hopper, with a revolving feed-roll attached to its lower end, such feed-roller cooperating with the shakefeeder, but being automatically adjustable, with the valve, toward or from said shakefeeder.

The invention therefore consists in the novel construction and combination of the parts in a double-action feeder, as hereinafter claimed, a preferred form being hereinafter described, and shown in the accompanying drawings, in whic Figure lis a perspective View of the doublemotion automatic feeder. Fig. 2 is a'central longitudinal section through the upper part of a double-roller mill-casing, showing. my irnproved double-action feeder attached thereto in vertical position. Fig. 3 is a side View of the feeder, the end of the casing being removed so as to disclose the operating parts.

Referring to the drawings, A designates the mill-casing, and B B the opposite pairs of crushing-rollers. The double-vibratingfeeder is composed of two metallic substantially semicircular end frames O', pivoted at their lower edges within the casing above and in- ;o termediate the pairs of rollers, as shown. The frames are connected by boards or plates (No model.)

c, the outer surfaces of said boards forming segments of a cylinder, Whose axis is in line with the pivots of the frames O. These boards c are longitudinally corrugated or serrated, the serrations all pointing downwardly in -the present invention, which in this particular differs from the construction shown in my aforesaid patent. End boards CB are fastened to the frames C to prevent 6c material escaping at the ends of boards c. Each frame O has an upright arm D, which extends through an opening in the top of the casing and is provided with a cup d on'its upper end, which cup engages a knocker-disk e on the transverse shaft E, j ournaled in castings F on the casing parallel with and above thel feeder. Obviously when shaft E is ro tated the feeder is rapidly vibrated. Coiled springs G are interposed between the upper 7o ends of the arms D and stops g on the top of the casing, as shown.

The lower ends of the hoppers H H are closed by the boards c on the vibrating feeder, and to the lower outer side of each hopper is 7 5 attached a hinged feed-regulating valve. I, the positionv of which is regulated by adjustable weights i, mounted on threaded rods 1I', attached to the'outer sides of the valves.

It will be noted that the valves I in the 8o present application are dierent from those shown in my said patent in that they are extended nearly to the loweredges of the vibrator-boards c, as shown. The valves may be positively closed against the vibrator, sofas to shutoff the feed, by means of cams J on rock-shafts J, provided with crank-a1'msj,con nectedv by operating-rods K. Vith the eX- ceptions noted the parts thus far described are substantially identical in construction 9o and arrangement with parts similarlylettered in my Patent No. 532,141 aforesaid.

To the lower edges of each valve I are attached brackets 13, in which is journaled the shaft Q of a force feed-roller Q. The shafts Q project through curved slots ct in the cas- 111g at one end and are provided with a pulley or sprocket q, which is driven by sprocketchains q from sprocket q2 on shafts R, journaled in brackets R on the top of the feeder roo and exterior to the hopper. There are two such shafts R, one at each side of the hopper and parallel with shaft E. One shaft R is driven by pulley t" and belt o" from a pulley E2 on shaft E. The other shaft Ris driven by a pulley R and crossed belt R2 from a pulley RfS on the driven shaft R. (See Fig. 4). By this arrangement both the feed-rollers Q in a double shaker are rotated toward the vibrator and feed the grain downward. The vibrator is operated at a high rate of speed, but preferably the rollers are driven more slowly.

he operation of the device may be clearly understood from the drawings and briefly is as follows: Motion being imparted to shaft E, the feeder C is rapidly oscillated or vibrated and feeds down the material in the hoppers I'I. The distance between the feed-rollers Q and the shaker is regulated by the weights on the valves I and the weight of the material in the hopper, but each of these feed-rollers rotates inwardly toward the vibrator and eooperates Atherewith in feeding the material uniformly out of the hopper. As the rollerfeed is a force-feed, clogging of the hopper is virtually impossible, and this double-motion feeder is therefore superior in feeding light materials-such as bran, Lise.

By this construction I provide both a vibrating feed and a rotary force-feed, while at the same time I have preserved all the advantages of automatic regulation by the weighted gates 0r valves realized by the coustruction shown in my aforesaid patent.

Having thus described my invention, what I therefore claim as new, and desire to secure by Letters Patent thereon, is-

l. In an automatic feeder, the combination of the hopper and a swinging regulatingvalve; with a force-feed roller carried by said valve, and means for operating the force-feed roll, substantially as described.

2. In an automatic shake-feeder, the combination of the hopper, a vibrator, and a regulating-valve; with a force-feed roller carried by said valve and cooperating with the vibrator, and means for operating the vibrator and force-feed roll,substantially as described.

3. In a shake-feeder, the combination of the vibrator, an adjustable swinging valve for regulating the amount of feed, and a forcefeed roller carried by said valve and adapted to coperate with said vibrator and valve; for the purpose and substantially as described.

4. In an automatic shake-feeder, the combination of avibrator, with an automaticallyadjustable valve and a feed-roller on said valve beside and cooperating with said vibrator, substantially as described.

5. In an automatic shake-feeder, the combination of a vibrating feeder a swinging valve and a revolving feed-roller carried by said valve and arranged to pass the material between it and the vibrating feeder; with mechanism for imparting motion to said vibrator and feed-roller, substantially as described.

G. In a feeder, the combination of a hopper, avibrating feeder at the lowerend thereof, and a valve adjustable toward er from said vibrating feeder and a feed-roller carried by said valve, and means for driving said feed-roller, substantially as described.

7. In an automatic shake-feeder, the combination of a vibrating feeder, and a swinging valve adjustable toward or from said vibrating feeder; with a revolving feed-roller carried by said valve between which vibrating feeder and roller the material is fed, and mechanism for imparting motion to said vibrating feeder and feed-roller, substantially as described.

8. In a feed-hopper, the combination of the hopper, and an adjustable valve or gate therefor provided with weights to automatically regulate its position; with a feeding-roller mounted on said gate and adjustable therewith, and mechanism for imparting motion to said roller, substantially as described.

9. In a feeder, the combination of a hopper, a vibrating feeder at the lower end thereof, an automatically-adjustable feed-roller opposite and eoaeting with said vibrator, means for automatically regulating the position of said roller, and means for imparting motion to said roller, for the purpose and substantially as described.

lO. In a feeder, the combination of a hopper, avibrating feeder at the lowerend thereof, an automatically adjustable swinging valve opposite said vibrator, and a feed-roller suspended from said valve and adjustable therewith, with means for impart-ing motion to said rollerand to said vibrator, for the purpose and substantially as described.

In testimony that I claim the foregoing as my own I ailix my signature in presence of two witnesses.

JOHN B. CORNVALL.

IOO 

